Buckled, Stretchable Polypyrrole Electrodes for Battery Applications

Highly stretchable 2D buckled polypyrrole film is prepared by a simple electropolymerization method on pre-strained Au-coated elastic substrate. This electrode retains its electrochemical properties in Mg batteries after 2000 stretching cycles with 30% strain applied. A combination of exceptional stretchability and electrochemical properties makes these novel conducting polymer films promising materials for many technological applications.